A 45-year-old woman is brought to the emergency department 45 minutes after her husband found her unconscious on the floor. She is unresponsive to painful stimuli. Her temperature is 37°C (98.6'F), pulse is 115/min, respirations are 6/min and shallow, and blood pressure is 110/60 mm Hg. Physical examination shows no other abnormalities. Arterial blood gas analysis on room air shows: pH : 7.08 Pco2: 80mmHg Po2: 45 mm Hg Which of the following is the most likely cause of this patient's hypoxemia? A) Decreased alveolar ventilation B) Decreased dead space ventilation C) Increased diffusion defect D) Increased shunt E) Increased ventilation-perfusion mismatch
A 45-year-old woman is brought to the emergency department 45 minutes after her husband found her unconscious on the floor. She is unresponsive to painful stimuli. Her temperature is 37°C (98.6'F), pulse is 115/min, respirations are 6/min and shallow, and blood pressure is 110/60 mm Hg. Physical examination shows no other abnormalities. Arterial blood gas analysis on room air shows: pH : 7.08 Pco2: 80mmHg Po2: 45 mm Hg Which of the following is the most likely cause of this patient's hypoxemia? A) Decreased alveolar ventilation B) Decreased dead space ventilation C) Increased diffusion defect D) Increased shunt E) Increased ventilation-perfusion mismatch
Chapter19: Documentation And Medical Records
Section: Chapter Questions
Problem 2AE
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A 45-year-old woman is brought to the emergency department 45 minutes after her husband found her unconscious on the floor. She is unresponsive to painful stimuli. Her temperature is 37°C (98.6'F), pulse is 115/min, respirations are 6/min and shallow, and blood pressure is 110/60 mm Hg. Physical examination shows no other abnormalities. Arterial blood gas analysis on room air shows: pH : 7.08 Pco2: 80mmHg Po2: 45 mm Hg
Which of the following is the most likely cause of this patient's hypoxemia?
A) Decreased alveolar ventilation
B) Decreased dead space ventilation
C) Increased diffusion defect
D) Increased shunt
E) Increased ventilation-perfusion mismatch
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